A Texan walked into a bar in Dublin, sat on a stool and addressed the locals.
" You Irish reckon you're drinkers: well I tell you what! You're just a load of pussy cats compared to Texan drinkers! PUSSY CATS! I'll bet $500 that no-one in here can drink 10 pints of Guiness in a row!! $500!"
Not one of the locals took on the challenge, and one bloke actually got up and left.
Half an hour later, the bloke came back, tapped the Texan on the shoulder and said:
"Right. I'll take you on."
They lined up 10 pints on the counter and the bloke drank them all, without stopping.
The Texan was amazed and gave him the $500.
"Just one question, though," said Tex. "Why did you leave and then come back?"
The bloke answered:
" Well I wasn't sure I could do it, so I went to the pub down the road to practise first"